/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.neo4j.visualization.graphviz;

import java.io.IOException;

import org.neo4j.graphdb.Relationship;

interface RelationshipStyle extends PropertyContainerStyle
{
    /**
     * Emit the start of a relationship.
     * @param stream
     *            the stream to emit the relationship to.
     * @param relationship
     *            the relationship to emit.
     * @throws IOException
     *             if there is an error on the stream.
     */
    void emitRelationshipStart( Appendable stream, Relationship relationship )
        throws IOException;
}
